; RUN: opt %loadPolly  %defaultOpts -polly-detect -analyze  %s | FileCheck %s
target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64"
target triple = "x86_64-unknown-linux-gnu"

%struct._IO_FILE = type { i32, i8*, i8*, i8*, i8*, i8*, i8*, i8*, i8*, i8*, i8*, i8*, %struct._IO_marker*, %struct._IO_FILE*, i32, i32, i64, i16, i8, [1 x i8], i8*, i64, i8*, i8*, i8*, i8*, i64, i32, [20 x i8] }
%struct._IO_marker = type { %struct._IO_marker*, %struct._IO_FILE*, i32 }

@A = common global [1024 x [1024 x double]] zeroinitializer, align 32
@B = common global [1024 x [1024 x double]] zeroinitializer, align 32
@stderr = external global %struct._IO_FILE*
@.str = private constant [8 x i8] c"%0.2lf \00", align 1

define void @scop_func() nounwind {
bb.nph35:
  br label %bb5.preheader

bb.nph:                                           ; preds = %bb5.preheader, %bb4
  %indvar36 = phi i64 [ %tmp49, %bb4 ], [ 0, %bb5.preheader ]
  %tmp12 = add i64 %indvar36, 1
  %tmp15 = add i64 %indvar36, 3
  %tmp17 = add i64 %indvar36, 2
  %scevgep39.phi.trans.insert = getelementptr [1024 x [1024 x double]]* @A, i64 0, i64 %tmp17, i64 2
  %.pre = load double* %scevgep39.phi.trans.insert, align 16
  br label %bb2

bb2:                                              ; preds = %bb2, %bb.nph
  %0 = phi double [ %.pre, %bb.nph ], [ %3, %bb2 ]
  %indvar = phi i64 [ 0, %bb.nph ], [ %tmp57, %bb2 ]
  %tmp13 = add i64 %indvar, 2
  %scevgep43 = getelementptr [1024 x [1024 x double]]* @A, i64 0, i64 %tmp12, i64 %tmp13
  %scevgep41 = getelementptr [1024 x [1024 x double]]* @A, i64 0, i64 %tmp15, i64 %tmp13
  %scevgep = getelementptr [1024 x [1024 x double]]* @B, i64 0, i64 %tmp17, i64 %tmp13
  %tmp19 = add i64 %indvar, 3
  %scevgep47 = getelementptr [1024 x [1024 x double]]* @A, i64 0, i64 %tmp17, i64 %tmp19
  %tmp21 = add i64 %indvar, 1
  %scevgep45 = getelementptr [1024 x [1024 x double]]* @A, i64 0, i64 %tmp17, i64 %tmp21
  %tmp57 = add i64 %indvar, 1
  %1 = load double* %scevgep45, align 8
  %2 = fadd double %0, %1
  %3 = load double* %scevgep47, align 8
  %4 = fadd double %2, %3
  %5 = load double* %scevgep41, align 8
  %6 = fadd double %4, %5
  %7 = load double* %scevgep43, align 8
  %8 = fadd double %6, %7
  %9 = fmul double %8, 2.000000e-01
  store double %9, double* %scevgep, align 8
  %exitcond1 = icmp eq i64 %tmp57, 1021
  br i1 %exitcond1, label %bb4, label %bb2

bb4:                                              ; preds = %bb2
  %tmp49 = add i64 %indvar36, 1
  %exitcond = icmp eq i64 %tmp49, 1021
  br i1 %exitcond, label %bb9.preheader.loopexit, label %bb.nph

bb8:                                              ; preds = %bb9.preheader, %bb8
  %indvar61 = phi i64 [ %indvar.next62, %bb8 ], [ 0, %bb9.preheader ]
  %tmp30 = add i64 %indvar61, 2
  %scevgep68 = getelementptr [1024 x [1024 x double]]* @B, i64 0, i64 %tmp29, i64 %tmp30
  %scevgep67 = getelementptr [1024 x [1024 x double]]* @A, i64 0, i64 %tmp29, i64 %tmp30
  %10 = load double* %scevgep68, align 8
  store double %10, double* %scevgep67, align 8
  %indvar.next62 = add i64 %indvar61, 1
  %exitcond24 = icmp eq i64 %indvar.next62, 1021
  br i1 %exitcond24, label %bb10, label %bb8

bb10:                                             ; preds = %bb8
  %indvar.next65 = add i64 %indvar64, 1
  %exitcond28 = icmp eq i64 %indvar.next65, 1021
  br i1 %exitcond28, label %bb12, label %bb9.preheader

bb9.preheader.loopexit:                           ; preds = %bb4
  br label %bb9.preheader

bb9.preheader:                                    ; preds = %bb9.preheader.loopexit, %bb10
  %indvar64 = phi i64 [ %indvar.next65, %bb10 ], [ 0, %bb9.preheader.loopexit ]
  %tmp29 = add i64 %indvar64, 2
  br label %bb8

bb12:                                             ; preds = %bb10
  %11 = add nsw i64 %storemerge20, 1
  %exitcond33 = icmp eq i64 %11, 20
  br i1 %exitcond33, label %return, label %bb5.preheader

bb5.preheader:                                    ; preds = %bb12, %bb.nph35
  %storemerge20 = phi i64 [ 0, %bb.nph35 ], [ %11, %bb12 ]
  br label %bb.nph

return:                                           ; preds = %bb12
  ret void
}
; CHECK: Valid Region for Scop: bb5.preheader => return